Mid Penn Bancorp INC 8-K Filing

FAQ

Key Financial Figures

• $1.00 — ange on which registered Common Stock, $1.00 par value per share MPB The NASDAQ Stoc

Filing Documents

• mpb-20251223.htm (8-K) — 31KB
• midpenbancorp_2025xtermi.htm (EX-16.1) — 1KB
• midpenbancorp_2025xtermi001.jpg (GRAPHIC) — 63KB
• 0001628280-25-058968.txt ( ) — 231KB
• mpb-20251223.xsd (EX-101.SCH) — 2KB
• mpb-20251223_lab.xml (EX-101.LAB) — 21KB
• mpb-20251223_pre.xml (EX-101.PRE) — 12KB
• mpb-20251223_htm.xml (XML) — 3KB

01 Change in Registrant's Certifying Accountant

ITEM 4.01 Change in Registrant's Certifying Accountant (a) On December 23, 2025, Mid Penn Bancorp, Inc. (the "Company") dismissed RSM US LLP ("RSM") as its independent registered public accounting firm, to be effective upon the completion of the audit for the fiscal year ending December 31, 2025. The dismissal of RSM was approved by the Audit Committee of the Board of Directors of the Company. The audit reports of RSM on the consolidated financial statements of the Company as of and for the fiscal years ended December 31, 2024 and December 31, 2023 contained no adverse opinion or disclaimer of opinion and were not qualified or modified as to audit scope or accounting principle. During the Company's fiscal years ended December 31, 2023 and December 31, 2024, and the subsequent interim period through December 23, 2025, there were no: (i) disagreements with RSM on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements if not resolved to the satisfaction of RSM would have caused RSM to make reference thereto in its reports on the financial statements of the Company for such years, or (ii) reportable events, as described under Item 304(a)(1)(v) of Regulation S-K, other than a material weakness in the Company's internal control over financial reporting disclosed by the Company in its Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which material weakness was subsequently remediated by the Company. The Company provided RSM with a copy of the disclosure it is making in this Current Report on Form 8-K and requested from RSM a letter addressed to the Securities and Exchange Commission indicating whether it agrees with such disclosures. A copy of RSM's letter dated December 29, 2025 is attached hereto as Exhibit 16.1. (b) Following a competitive process, on December 23, 2025, the Company engaged Deloitte & Touche LLP ("Deloitte") as the Company's new independent regis

01 Financial Statements and Exhibits

ITEM 9.01 Financial Statements and Exhibits (d) Exhibits. 16.1 Letter of RSM US LLP to the Securities and Exchange Commission 104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. MID PENN BANCORP, INC. (Registrant) Date: December 29, 2025 By: /s/ Rory G. Ritrievi Rory G. Ritrievi President and Chief Executive Officer

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